Preheat and prep: First, set your oven to 400°F (200°C). Wash and pat dry your 4 medium patty pan squashes, then carefully cut them into 1-inch pieces.
Season the squash: In a large bowl, toss the squash halves with 2 tbsp olive oil, 1 tsp each of garlic powder, kosher salt, oregano, and thyme, and ½ tsp pepper until evenly coated.
Arrange on pan: Place the seasoned squash in a single layer, cut-side down, on a baking sheet. Make sure not to overcrowd the pan for the best results.
Roast and garnish: Bake for 20-25 minutes, or until the squash is tender and the edges are golden brown. Sprinkle with 1 tbsp of fresh parsley before serving warm.